Craig Tiller 8448d499e2 [promises] Add `AllOk` combinator (#35304) ... `AllOk` runs a set of promises concurrently, and like `TryJoin` waits for them all to succeed or one to fail. Unlike `TryJoin` it returns a single unified status of the composition, so cannot handle member promises that might return `StatusOr` or the like. Closes #35304 COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/35304 from ctiller:all-review 30f5f809c6 PiperOrigin-RevId: 591031189		2023-12-14 13:21:35 -08:00
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core	[promises] Add `AllOk` combinator (#35304)	2023-12-14 13:21:35 -08:00